Home / 13,811.97-19,081.35-11,154.76

Finding the Fourth Proportional to 13,811.97, 19,081.35 and 11,154.76

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Solution

The fourth proportional to 13,811.97, 19,081.35 and 11,154.76 is: 15,410.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,811.97 : 19,081.35 = 11,154.76 : x
  2. Step 2: Convert to fraction form
    13,811.97/19,081.35 = 11,154.76/x
  3. Step 3: Cross multiply
    13,811.97x = 19,081.35 × 11,154.76
  4. Step 4: Simplify right side
    13,811.97x = 212,847,907.98
  5. Step 5: Solve for x
    x = 212,847,907.98/13,811.97
  6. Step 6: Final answer
    x = 15,410.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.